I loved all of these. I wonder if I can find these on Youtube. TO YOUTUBE!
Little Spies
http://youtu.be/SXrB3OaP5lE
I really loved this one. And the fat kid inventor who made the bike that could jump over cars. That one ended in a chase where even company men in suits were chasing the boys on their superbikes.
Also there is one that has been driving me crazy and I can't remember the name of it. It was a time travel tale of a kid who goes back in time to the 1920s and he doesn't realize fast food doesn't exist, etc. There was also another one with barnstormers.
There was also an oddly dystopian future scifi themed one where a bunch of kids were sent on a spaceship and the first half of it resembles Blade Runner in a way. But then it devolved into a tale of space pirates that didn't really make any sense but I loved it anyway.
The sci-fi show might be a two-parter Disney produced called "EarthStar Voyager", about a mostly young crew recruited to navigate the titular ship on an interstellar trip to a planet in another solar system that may be habitable, and send a message home to a polluted Earth if it is. It's going to be a bit of a long trip even with a space drive, twenty-six years. Some of it to be passed in cryogenic suspension but still. Only conspirators have their own plans for the ship and crew.
I remember it mostly because there were not one but two scenes of people getting blasted out of airlocks into space, and a grizzled ex-space captain who joins the crew after they dock at an abandoned space station helps them rig a rail-gun cannon up.
It was sort of like a very, very cheap version of Avatar where they never actually get to the planet in question. I just remember feeling extremely cheated by that.
I don't know what shithead, pencil neck asshole at Disney hasn't released Little Spies on DVD yet, but it's a travesty that it hasn't happened. I watched the tape my grandma made every time I went over there from 1988 - 1991.